Base | Representation |
---|---|
bin | 1010010111101… |
… | …00111111101011 |
3 | 20001200101100210 |
4 | 11023310333223 |
5 | 134232033411 |
6 | 12344232203 |
7 | 2104242426 |
oct | 513647753 |
9 | 201611323 |
10 | 86986731 |
11 | 45113467 |
12 | 2516b663 |
13 | 15038550 |
14 | b7a49bd |
15 | 7983ca6 |
hex | 52f4feb |
86986731 has 32 divisors (see below), whose sum is σ = 133056000. Its totient is φ = 50105088.
The previous prime is 86986723. The next prime is 86986763. The reversal of 86986731 is 13768968.
It is not a de Polignac number, because 86986731 - 23 = 86986723 is a prime.
It is a super-2 number, since 2×869867312 = 15133382740132722, which contains 22 as substring.
It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is not an unprimeable number, because it can be changed into a prime (86986771) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65290 + ... + 66608.
It is an arithmetic number, because the mean of its divisors is an integer number (4158000).
Almost surely, 286986731 is an apocalyptic number.
86986731 is a deficient number, since it is larger than the sum of its proper divisors (46069269).
86986731 is a wasteful number, since it uses less digits than its factorization.
86986731 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1443.
The product of its digits is 435456, while the sum is 48.
The square root of 86986731 is about 9326.6677329044. The cubic root of 86986731 is about 443.0822339854.
The spelling of 86986731 in words is "eighty-six million, nine hundred eighty-six thousand, seven hundred thirty-one".
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